Police are appealing for information from the public to help locate the 27-year-old.
It is believed Marlon Edward Christopher Wallam can assist detectives with their ongoing investigations.
Mr Wallam is described as approximately 180cm tall, with a slim build, brown hair, brown eyes and numerous tattoos on both arms.
He was last seen wearing a black and red basketball singlet with ‘BULLS 23’ with blue denim jeans and white sneakers.
He is known to frequent the Mandurah and Beaconsfield areas.
If sighted, members of the public are advised not to approach the man but contact police immediately on 131 444.
Anyone with information on his whereabouts is asked to call Crime Stoppers on 1800 333 000 or make a report online at www.crimestopperswa.com.au